Sheet-metal-working machine.



G. HORVAT-H.

SHEET METAL WORKING MACHINE. APPLICATION FILED APR. 29. 1916. RENEWEDJULY 20.1911.

1 ,240,21 2. Patented Sept. 18,1917.

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I SHEET METAL WORKING MACHINE.

APPLICATION FILED APR. 29. 1916. RENEWED JULY 20.1917.

1 ,240, 2 1 2 D Patented Sept. 18, 1917.

9 SHEETS-SHEET 2.

lwemz 692a Horua/b G. HORVATH. SHEET METAL WORKING MACHINE.

APPLICATION FILED APR-29,1916- RENEWED JULY 20.1911.

Patented Sept. 18, 1917.

9 SHEETS-SHEET 3.

G. HORVATH.

SHEET METAL WORKING MACHINE.

APPLICATION FILED APR. 29. 1916. RENEWED JULY 20.1917.

Patented Sept. 18, 1917.

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Geza-z Ho rue! h 18 22: 572-20 2776545 G. HORVATH.

SHEET METAL WORKING MACHINE. APPLICATION FILED APR. 29, 1916. RENEWEDJULY 20.1917.

1,246,212, PatentedSept. 18,1917.

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APPLICATION Fl JULY 20.1917. 1,240,21 2e Patented se t. 18, 1917.

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G. HORVATH.

SHEET METAL WORKING MACHINE.

APPLICATION man APR. 29. 1916. RENEWED JULY 20.1917.

Patented Sept. 18, 191?.

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G. HORVATH. SHEET METAL WORKING MACHINE.

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G. HORVATH.

SHEET METAL WORKING MACHINE.

APPLICATION FILED APR. 29, 1916- RENEWED JULY 20.1911.

P vu 9 SHEETS-SHEE1' 9.

Patented Sept. 18, 1917.

Cm Q 5% v% mm GEZA HORVATH, OF DETROIT, MICHIGAN.

SHEET-METAL-WORKING MACHINE.

Specification of Letters Patent.

Patented Sept f8, 1917.

Application filed April 29, 1916, Serial No. 94,325. Renewed July 20,1917. Serial No. 181,859.

To all whom, it may concern:

Be it known that I, GEZA HoRvA'rH, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Sheet-Metal-Work- Y ingMachines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide an improved sheet metalworking ma chine especially adapted for automatically making fromribbon-like metal sheets, corrugated radiator plates with overturned orreversely disposed alining .webs, such as disclosed and claimed in theapplication of Edward S. Erickson, Serial No. 67,780, filed December 20,1915, and entitled Cellular radiators, and particularly illustrated inFigs. 1 to 5, inclusive, of the drawings of said application.

Generally stated, the invention consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

In the complete machine, as preferably designed, the followingoperations are automatically performed, to-wit:

First, the ribbon-like metal sheet is passed between slitting rollersthat are provided With circumferentially spaced shearing surfacesarranged to cut, in the two edges of the sheet, longitudinally spacedslits spaced by connecting strands of the metal sheet;

Second, the slitted sheet is run between corrugated rollers arranged toforce transverse corrugations in the metal sheet;

Third, the corrugated edges of the metal sheet are passed throughcam-acting turning channels and are thereby turned over approximately at180 degrees, thereby forming alining webs that are oppositely disposedin respect to adjacent corrugations in the body of the sheet;

Fourth, the corrugated metal sheet, with its reversely disposed aliningwebs, is passed between cooperating corrugated so-calle'd clenchingrollers which press the said alining webs to final position in respectto the body corrugations of the strip; and 4 Fifth, and last, so far asthe operation of the present machine is concerned, the com pletelycorrugated sheet is cut into radiator plates of predetermined length, bya cutter which has a timed action in respect to the other devices noted.7

On its way from the slitting rollers to the corrugating rollers, thestrip is passed in contact with the so-called distance adjuster, bymeans of which the length of that portion of the sheet which is betweenthe slitting devices and corrugating rollers, is accurately adjusted sothat the corrugations w ll be properly located in respect to the slitsand intervening connecting strands of the sheet.

Also, in the machine illlustrated, the ribbon of sheet metal, While onits way to the feed rollers and slitting devices, is passed over a lightcontaining inspection box and is moved past a marking device by means ofwhich latter, perforated or defective portions of the sheet may beclearly marked for positive identification.

In the accompanying drawings which illustrate the complete machineembodying the several features of my invention, in What, at present, arebelieved to be the preferred forms thereof, like characters indicatelike parts throughout the several views.

Referring to the drawings:

Figure 1 is a right side elevation of the machine, some parts beingbroken away;

Fig. 2 is a plan view of the machine;

Fig. 3 is a left side elevation of the machine;

Fig. 4 is a longitudinal section taken through the central portion ofthe machine, some parts being broken away;

Fig. 5 is a transverse section on the line m w of Fig. 4;

Fig. 6 is a detail showing parts of the so called travel adjuster foundin the vicinity of the'line marked w -m on Fig. 4, some parts beingsectioned and some parts being broken away;

Fig. 7 is a section on the line afl-az of Fig. 6, some parts beingbroken away;

Fig. 8 is an enlarged transverse section taken approximately on the line00 w of Fig. 4, some parts being shown in full, and some parts beingbroken away;

Fig. 9 is a right side elevation of the gears and rollers shown in Fig.8, some parts being broken away;

Fig. 10 is a section taken on the line m w of Fig. 8, some parts beingbroken away;

Fig. 11 is an enlarged fragmentary view in side elevation showing partsof the corrugating rollers;

Fig. 12 is a section taken on the line a2 m of Fig. 11;

Fig. 13 is a perspective showing a portion of the metal sheet as itappears immediately after it has passed from the rotary slittingdevices;

Fig. 14 is a perspective view showing the corrugated sheet as it appearsimmediately after passing from the corrugating rollers;

Fig. 15 is a plan view with some parts broken away, and some partsremoved, show ing the corrugating rollers, the means for turning thecorrugated edge of the sheet, and the so-called clenching rollers;

Fig. 16 is a section taken on the line co -a of Fig. 15, some partsbeing broken away;

Figs. 17, 18, 19 and 20 are transverse sections taken through theso-called turning devices, respectively, on the line m", w, as,

and 22 on Fig. 15;

Fig. 21 is a perspective view illustrating the ribbon as it appearswhile within the cam channels of the turning device, some parts of thenear edge of the ribbon being shown in section;

Fig. 22 is a fragmentary view in vertical section taken approximately onthe line m a: of Fig. 2, showing the so-called clenching rollers andillustrating the action thereof on the corrugated sheet;

Fig. 23 is a section taken on the line wa2 of Fig. 22;

Fig. 24 is a fragmentary cross section of the corrugated sheet showingthe position of the turned edge or alining web portion thereof as itappears immediately after coming from the cam-acting turning channels;

Fig. 25 is a view corresponding to Fig. 24, but showing the position ofthe said turned edge as it appears after passing between the so-calledclenching rollers;

Fig. 26 is a perspective view of the corrugated strip as it appearsafter passing between the clenching rollers;

Fig. 27 is a vertical section taken approximately on the line m m ofFig. 2, some parts being shown in full'and some parts being broken away;

Fig. 28 is a horizontal section taken on the line 00 -00 of Fig. 27

Fig. 29 is an elevation of the parts found in the vicinity of the linemarked w m of Fig. 27;

Fig. 30 is a transverse section taken on the lines w x of Figs. 27 and28, some parts being removed;

Fig. 31 is a face elevation of the one revolution clutch shown in Fig.30, some parts being broken away; and

Fig. 32 is a detail showing one of the interchangeable gears foroperating the cutter actuating trip.

' tion box 4 which contains one or more electric lamp bulbs 5 and isopen at its top, is

supported by an oblique frame 6 provided at its lower end with a longsupporting stud 7 having a detachable thumb nut 8'. The ribbon-likemetal sheet y is contained on and supplied from a spool 2 removablyjournaled on the stud 7. v

On its way from the spool to the feed rollers and slitting devices, thesheet y passes over the open face of the inspection box 4 and its edgespass under the inner edges of guide strips 9, secured on the upper sideedges of the inspection box, (see Figs. 4 and 5).

As shown, the frame 6 is made adjustable as to inclination, by means ofa telescopically extensible strut 10 pivoted to the free end portion ofthe arm 6 and to a bearing lug on the pedestal 1.

The sheet marking device, as shown, comprises a small rock shaft 11pivoted to lugs on the upper end of the frame 6 and provided with an arm12 equipped-at its free end with a marking pin 13 adapted to perforateor indent the metal strip when forced against the same. This arm isspring retracted (see Fig. 3), and its shaft 11, at one end, is providedwith a projecting hand piece 14, by the depression of which, the pin 13may be moved against the metal sheet.

All of the running parts of the machine are driven indirectly from thepower-driven pulley 15 that is normally loose on a driving shaft 16journaled in a bearing bracket 17 secured to the right hand side of thepedestal 1. This pulley is adapted to be connected, at will, to theshaft 16, by a suitable friction clutch 18 which may be operated in theusual way from a hand lever 19 pivoted to a lug on the outer end of thebracket 17. The shaft 16, through a pair of intermeshing spiral ears 20,drives a longitudinal counter shaft 21 journaled in a suitable bearingon the bracket 17, and in longitudinally spaced bearings 22 and 23secured on the right hand side of the frame bracket 3. At its extremeinner end, the

lower shaft 28 is journaled in suitable fixed bearings on the sides ofthe pedestal 1, and secured to one end thereof, is a spur gear 29, andto the other end thereof, is a spur gear 30. The gear 30 meshes with thepinion 24 on the driving shaft 16. The upper roller shaft 27 isjournaled in the pronged free portion of an oscillatorybearing 31secured to a rock shaft 32 mounted-in suitable bearings inthe pedestal 1and provided at one end with a depending arm 33. The depending free endof the arm 33 is held between opposing adjusting screws 34 that workwith threaded engagement through lugs 35 on the pedestal 1 (seeparticularly Figs. 3 and 4).

The rollers 25 and 26 afford supports for carrying the slitting devicesproper, and these slitting devices, as preferably constructed, are inthe form of hardened steel slitting rings 36 (see particularly Figs. 8,9 and 10), rigidly but detachably secured to the sides of the saidrollers by screws, or otherwise, and formed with circumferentiallyspaced segmental shearing edges and intervening gaps or notches. Theshearing surfaces of the cooperating upper and lower rings 36 arearranged to overlap slightly with close engagement, as required forproper slitting action in forming the longitudinally spaced slits in themetal sheet, and they are so timed that the gaps in the cooperatingupper and lower rings will run together, and thus leave the requiredconnecting strands, in the metal sheets, between the slits. To obtainaccurate slitting action, provision is made for circumferentiallyadjusting, or, in other words, slightly advancing or retarding theslitting surfaces of the upper slitting rings in respect to thecooperating slitting surfaces of the lower slitting rings. As shown,this is accomplished by providing the upper roller shaft 27 at one end(see Figs. 8 and 9) with a two-part gear, the hub 37 of which is fixedto the said shaft and the toothed or rim section 37 of which is capableof slight rotary adjustment on said hub, under the action of aneccentric 38, and is adapted to be clamped to the flange of said hub, bybolt and screw connections 39. As shown, the eccentric 38 is journaledto the flange of the hub 37 and works in an angular seat in the toothedsection 37. Here, it should be noted further that the teeth of the gearrim 37 mesh with the teeth of the gear 29 on the lower roller shaft 28,so that the two gears will be driven with a properly timed action.

Fig. 13 shows the metal sheet 3 as it appears immediately after passingfrom the slitting rollers. In the said view, Fig. 13, the longitudinallyspaced slits are indicated at if and the intervening connecting strandsare indicated at g From the slitting rollers, the slitted sheet ispassed between corrugating rollers, best shown in Figs. 1, 4,11 and 12.The lower corrugated roller 40 is secured on a shaft 41 journaled insuitable bearings on the sides of the pedestal 1, while the uppercorrugating roller 42 is secured to a shaft 43 journaled in the prongedfree portion of an oscillatory bearing 44 secured to a rock shaft 45journaled in bearing lugs on the pedestal 1 and provided at one end witha depending arm 46. The free lower end of the arm 46 is adjustably heldbetween opposing adjusting screws 47 working in lugs 48 in thepedestal 1. A tension spring 49 is interposed between the arm 46 and thecapped head of one of the adjusting screws 47. By the adjustment ofthese screws 47, and the spring 49, the pressure under which thecooperating corrugating rollers 40 and 42 will engage the slitted sheet,may be varied.

By reference to the Erickson application above identified, it will benoted that the corrugated plates are put together to form radiator coreunits in the form of zigzag water tubes and intervening zigzag airpassages, and that in the formation of the water tubes, the edgeportions of the plates should be offset so that they will come intocontact, leaving the bodies of the two corrugated plates which form thewater tube, spaced apart. To thus laterally offset the edges of thesheets from which the plate is formed, the corrugated rollers 40 and 42,at their ends, are provided with supplemental annular corrugatedsections 40 and 42*, respectively. By reference to Figs. 11 and 12, itwill be seen that the corrugations in the upper supplemental sections 42stand ra dially slightly outward of the corrugations of the uppercorrugating roller 42, while the corrugations of the lower supplementalsections 40 stand radially slightly inward of the corrugations ofthesaid lower corrugating roller 40.

Fig. 14 shows the form of the corrugated sheet as it appears immediatelyafter it has passed between the corrugating rollers, and by reference tothis view it will be noted that the edge portions of the said sheet arelaterally offset from the body corrugations of the sheet, on linesconsiderably inward of the slits 11 thereof.

As already stated, the slitted sheet in passing from the slittingdevices to the corrugating. rollers, is sub ect to the so-calleddistance adjuster. This distance adjuster, as shown, (see Figs. 4, 6 and7 is in the form of a guide roller 50 journaled on a spindle 51, havingeccentric hubs 51 journaled in standards 52 rigid on the pedestal 1.Obviously, the greater depression given to the slitted sheet y, by theguide roller 50, the greater will be the length of that portion of thesheet that is between the slitting rollers and corrugating rollers. Thisadjustment accomplishes the same result as would be obtained by varyingthe distance between the slitting devices and corrugating rollers, inthat it will bring the connecting strands 'y of the sheet always intoalinement with the outermost portions of the corrugations of the lowercorrugating roller,

and thus, in the corrugating sheet, (see Fig. 14), brings the saidconnecting strands into longitudinal alinement so that the corrugatededges of the sheet may be turned thereon, as hereinafter more fullydescribed.

For locking the roller 50 of the distance adjuster in its difierentpositions, a nutequipped lock bolt 53 is mounted for endwise movementsin one of the standards 52 and has a segmental notch that engages thecorresponding hub 51*. As shown in Fig. 6, one of the hubs 51 isprovided with a projecting stem with a knurled head 51", by

means of which the eccentric spindle may be adjusted.

For positively rotating the upper and lower corrugating rollers so thattheir corrugations will intermesh, the upper and lower roller shafts 41and 43 (see Figs. 1 and 4) are provided with two-part gears, the toothedrims 54 of which intermesh and the hubs 55 of which are secured to therespective shafts. The said rims 54 are connected to flanges of the hubs55, with freedom for slight circumferential adjustment, under the actionof adjusting eccentrics 5 6 and cotiperating screw-and-slot connections57, the arrangement andoperation thereof being substantially identicalwith the means for adjusting the hub and rim sections 37 and 37 of theupper feed roller 27, already more fully described. The said adjustmentof the rims and hubs of said gears permits of very accurate setting ofthe corrugations of the upper and lower corrugating rollers.

From the corrugating rollers, the corrugated sheet is next passedthrough edge turning devices, preferably in the form of difl'erentialcam-acting channels of varying cross section. As best shown in Figs. 15to 20, inclusive, these differential cam-ways 58 which are formed in abed plate 59, provided with a channel covering top plate 59, are sodesigned that as the corrugated sheet is moved therethrough, thecorrugated edge portions of the sheet that are outward of the slit ywill be gradually turned on the connecting strands g through 180degrees, or until the turned edges are disposed reversely to thecorresponding body corrugations from which they were turned.

For appearance sake and for certain structural reasons, it is desirablethat the corrugations in the sheet be hexagonal, and hence, thecorrugations in the corrugating rollers described are hexagonal, thatis, each corrugation forms three sidesof a hexagon,

and consequently, of course, the corrugations in the corrugated sheetwill be correspondingly formed, and the turned, or reversely disposedalining [webs will form hexagons, with the adjacent ends of the body ofthe corrugated sheet. When two such sheets are assembled, the aliningwebs will fit corresponding corrugations of adjacent sheets.

- Figs. 17, 18, 19and 20 progressively show difierent stages in theturning over of the corrugated alining webs of the sheet, and Fig. 21shows, progressively, the condition of the corrugated sheet while it ispassing through the differential cam channel. In

Figs. 17 to 26, inclusive, these alining webs.

are designated at 3 After the corrugated sheet has been passed throughthe turning channel, its overturned alining webs y will standsubstantially as shown in Fig. 24 and will be slightly oblique inrespect to the corrugated edges of the body of the sheet. From theturning chan nels, the corrugated sheet is passed between the clenchingrollers, best shown in Figs. 2, 4, 22 and 23. Both clenching rollershave corrugated surfaces, and the upper and lower clenching rollers 60and 61, respectively, are secured to shafts 62 and 63, the latter ofwhich is journaled in suitable bearings on the sides of the framebracket 3. The roller shafts 62 and 63 are provided, at their right handends with intermeshing spur gears 64 and 65 (see Figs. 1, 2 and 4). Thespur gear 65 meshes with a spur gear 66 that is carried by a shorttransverse counter shaft 67 journaled in the shaft bearing 22. Thisshaft 67 is driven from the counter shaft 21 through a pair ofintermeshing spiral gears 68.

The upper roller shaft 62 is journaled in the pronged free portion of anoscillatory bearing 69 that is pivoted at 70 to a suitable bearing lug71 located on the frame bracket 3 at one side of the turning channel.Nut-equipped bolts 72 anchored to the sides of the frame bracket 3 arepassed freely through perforations in the free pronged ends of thebearing 69, and springs 73 on these bolts are compressed between theupper nuts thereof and the perforated end portions of said bearing.These springs 73, as is evident, ress the clenching rollers together andagalnst the corrugated strip which is passed between thesame.

The lower clenching roller 61, which is much like the lower corrugatingroller, but shown of smaller diameter, is provided with similarhexagonal peripheral corrugations and has correspondingly corrugatedsupplemental sections 61 set radially slightly inward for properengagement with the laterally offset edge portions of the corrugatedbody of the sheet. The upper clenching roller 60 has transverseperipheral corrugations that intermesh with the correspondingly formedcorrugations of the lower roller 61. Secured to the sides of this upperclench ing roller 60 are annular supplemental sections 60 formed withhexagonal corrugating teeth that are circumferentially offset in respectto the corrugations of the said roller 60 and are arranged to properlyengage the overturned alining webs 3 of the metal sheet, as best shownin Fig. 22. By reference to Fig. 22 it will be seen that when thehexagonal corrugations or teeth of the supplemental sections 60 and 61come together, they form hexagons and the alined projections of theteeth of the corrugations will tightly press the lower flat portions ofthe alining webs against the adjacent flat surfaces of the corrugatedbody, as best shown in Fig. 25, and is further illustrated in Fig. 26,which latter view shows the completely formed corrugated metal sheet,with reversely disposed alining webs, ready to be cut into sections toform the radiator plates.

From the clenching rollers, the corrugated metal sheet passes through anopen guideway 74 (see Figs. 2 and 4:), and over a relatively fixedshearing blade 75 shown as adjustably secured to the extreme rear end ofthe frame bracket 3 (see particularly Fig.

29). Pivoted to a lug of the bearing 23 is a cutter lever 76 equipped atone end with a shearing blade 77 for cooperation with the blade 7 5, andprovided at its other end with a roller or lateral projection 78 thatworks in a profile cam groove 79 of a cam wheel 80 secured to the rearend of a short longitudinal shaft 81 journaled in the rotary sleeve 82,which, in turn, is journaled in the bearing 23. At its rear end (seeFig. 27), the sleeve 82 is provided with a spur pinion 83 that mesheswith a spur gear 84 on the extreme rear end of the counter shaft 21. Atits front end, the sleeve 82 carries an internal ratchet disk 84, and atits front end, the shaft 81 has a disk-like head 85 that carries anoutward spring-pressed dog 86, the end of which is adapted to be engagedwith teeth of the ratchet disk 84. The said parts 84, 85 and 86constitute a one-revolution clutch that is normally held out of actionby a stop bolt 87 the end of which normally engages the free end of thedog 86 and holds the same in an inoperative position indicated by dottedlines in Fig. 31. This stop bolt 87 slides through a small bearing 88 onthe bracket 3 and is pivotally connected to the depending arm of a bellcrank 89 pivoted to the bracket 3, at 90.

The short arm of the bell crank 89 is adapted to be engaged by atripping tappet 91 detachably secured to a spur gear 92, by means of ascrew, or otherwise. This gear 92 is one of a series of gears ofdifferent diameter, and which gears are interchangeably usable to varythe length of the corrugated plates that are to be cut from thecorrugated metal sheet. A smaller one of these gears is shown in Fig. 32and is there designated by the numeral 92. The gear 92 is detachablyjournaled on the outer end of a stud 93 rigidly secured to an adjacentplate of the frame bracket 3, as best shown in Fig. 28.

The numeral 94: indicates a gear supporting arm having a slotted outerend and a split hub, which hub, by a screw 95, is adapted to be rigidlybut adjustably clamped on the stud 93. The numeral 96 indicates anintermediate spur gear adjustably journaled to the slotted portion ofthe arm 94 and in mesh with the gear 92, and also in mesh with the spurpinion 97 that is carried by the short transverse shaft 67 which latter,it will be remembered is driven from the counter shaft 21.

The adjustment of the gear 96 and of its supporting arm 94 permits saidgear 96 to be always engaged with the pinion 97 and with the gear 92, orsubstitute gears of different diameter.

In Fig. 29, the numeral 98 indicates a brake band that engages theperiphery of the cam wheel under light friction and prevents the saidcam and connected parts from being given excessive movement by momentum.The ends of this brake band 98 are shown as connected to two smalltension adjusting levers 99 that are intermediately pivoted to theextreme rear end of the bracket'3 and are subject to adjustment by a setscrew 100.

Normally, the cutter blade 77 is raised so that the corrugated sheet maypass freely between the two shearing blades. At predetermined intervalsof movement of the corrugated sheet, the tappet 91 will be brought intoengagement momentarily with the short arm of the bell crank 89, andthere by retract the stop bolt 87 and release the dog 86 of theone-revolution clutch, and when this happens, the said dog will engagethe teeth of the ratchet disk 84 and give the same, and the cam wheel80, one complete rotation. This one complete rotation of the cam wheelcauses the cutter blade 77 to make one complete reciprocation, downwardand backward to normal position, and thus cuts off or severs thecorrugated metal strip. During that short interval of time required tosever the corrugated metal sheet, feed movement of the rear end of thesheet will be intercepted and that portion of the cor rugated sheet thatis between the cutter and the clenching rollers will be caused to buckleslightly; but upon release from the cutter, the sheet will assume itsnormal shape and be advanced just as if its movement has never beenintercepted by the cutting action. Obviously, the length of the platesto be cut from a corrugated sheet may be varied, at

will, by the substitution of gears 92, 92 of different diameter.Preferably the arrangement will be such that the number of corrugationsin the severed plates would correspond to the number of teeth in theinterchangeable gear employed for the particular operation.

In the above described machine, the slitting rollers, the corrugatingrollers, and the clenching rollers, all cooperate to feed the metalsheet with a properly timed action, and hence, it will be understoodthat broadly,

any one or more of these devices or any other suitable feeding mechanismmay be treated as ribbon feeding means.

What I claim is 1. A sheet-metal working machine having laterally spacedslitting devices adapted to form in the sheet parallel longitudinallyspaced slits, and means for corrugating the slit sheet and for displacinportions adjacent to slits to form reverse y disposed alining webs.

2. A sheet-metal working machine having slittingdevices adapted to formnear the edge of the sheet longitudinal slits spaced apart by connectinstrands of the metal sheet, and also provided with marginal displacingdevices adapted to displace portions of the margin of the sheet andthereby form reversely disposed alining webs.

3. A sheet-metal working machine having slitting devices adapted toform, near the opposite margins of the sheet, opposite parallellongitudinal-slits spaced apart by connecting strands of the metalsheet, and also provided with marginal displacing devices adapted todisplace portions of the margins of the sheet to afiord reverselydisposed alining webs.

4. In a sheet-metal working machine, the combination with slittingdevices and corrugating devices, of a device for automatically turningthe corrugated edge of the metal sheet.

5. A sheet-metal working machine having slitting devices adapted toform, near the opposite margins of the metal sheet, opposite parallellongitudinal slits spaced apart by connecting strands of the metalsheet, corrugating evices adapted to form transverse corrugations in themetal sheet, and marginal turning devices adapted to turn the margins ofthe sheet, on the said strands, to form reversely disposed alining webs.

6. In a sheet metal Working machine, cooperating rollers havingcircumferentially spaced shearing surfaces timed so that gaps betweenshearing surfaces run together, the shearing surfaces on one of saidrollers being circumferentially adjustable, substantially as described.

7. In a sheet-metal working machine, cooperating rollers havingcircumferentially spaced shearing surfaces timed so that gaps scribed.

8. In a sheet-metal Working machine, slitting devices adapted to formlongitudinal slits in the metal sheet, a corrugating device forcorrugating the slit sheet, and a travel adjuster operative to vary thelength of that portion of the sheet which is between said slittingdevices and said corrugating devices.

9. In a sheet-metal working machine, the combination with rotaryslitting devices and corrugating rollers, of a rotary travel adjusteroperative to vary the length of that portion of the sheet that isbetween said slitting devices and corrugating rollers.

10. In a sheet-metal working machine, slitting devices adapted to formlongitudinal slits in the metal sheet, a corrugating device forcorrugating the slit sheet, and a rotary eccentric travel adjusteradapted to be variably set, and operative to vary the length of thatportion of the sheet which is between said slitting devices andcorrugating devices.

11. In a sheet-metal working machine, the combination with slit-tingdevices adapted to form in the sheet parallel longitudinal slits spacedby connecting strands of the metal sheet, of a corrugating deviceadapted to form transverse corrugations in the slitted sheet, marginalturning devices adapted to turn the corrugated margin of the sheet onsaid strands to form reversely disposed alining webs, anda clenchingdevice for pressing the said alining webs to final position in respectto the corrugations of said sheet.

12. In a sheet-metal working machine, the combination with rollershaving coiiperating circumferentially spaced shearing edges adapted toform, near the opposite margins of the sheet,opposite parallellongitudinal slits spaced by connecting strands of the metal sheet, ofcorrugating rollers adapted to form transverse corrugations in the metalsheet, marginalv turning devices adapted to turn the corrugated marginsof the sheet on said strands to form reversely disposed alining webs,and corrugated clenching rollers timed for engagement with the turnedalining webs and operative to press the same to final position inrespect to the corrugation of said sheet.

13. The combination with means for turning the corrugated edge of acorrugated metal sheet having longitudinal marginal slits andintervening connecting strands. of means for feeding the said corrugatedsheet to and past said edge-turning means.

14. The combination with two sets of corrugated rollers for controllingthe feed movements of a corrugated sheet having longitudinal slits andintervening connecting strands, of differential cam-acting chan nelslocated between said two pairs of rollers and operative to turn over thecorru-- gated edges of said sheet. 7

15. In a sheet-metal working machine, the combination with slittingrollers adapted to form near the margins of the sheet opposite parallellongitudinal slits spaced apart by connecting strands of the metalsheet, of corrugating rollers adapted to form transverse corrugations inthe slitted sheet, and laterally spaced cam channels arranged to turnthe corrugated margins of the sheet, on the said strands, to formreversely disposed alining webs.

16. In a sheet-metal working machine, the combination with slittingrollers adapted to form near the margins of the sheet opposite parallellongitudinal slits spaced apart by connecting strands of the metalsheet, of corrugating rollers adapted to form transverse corrugations inthe slitted sheet, laterally spaced cam channels arranged to turn thecorrugated margins of the sheet, on the said strands, to form reverselydisposed alining webs, and corrugated clenching rollers constructed tofit both the corrugated body and turned alining webs and to press thelatter to final position in respect to the corrugated body of saidsheet.

17 In a sheet-metal working machine, the combination with rollers havingcooperating circumferentially spaced shearing edges adapted to form,near the opposite margins of the sheet, opposite parallel longitudinalslits spaced by connecting strands of the metal sheet, of corrugatingrollers adapted to form transverse corrugations in the metal sheet,marginal turning devices adapted to turn the corrugated margins of thesheet on said strands to form reversely disposed alining webs,corrugated clenching rollers timed for engagement with the turnedalining webs and operative to press the same to final DOSition inrespect to the corrugation of said sheet, and a travel adjusteroperative to vary the length of that portion of the sheet that isbetween said slitting rollers and corrugating rollers.

18. In a sheet-metal working machine, the combination with rollershaving cooperating circumferentially spaced shearing edges adapted toform, near the opposite margins of the sheet, opposite parallellongitudinal slits spaced by connecting strands of the metal sheet, ofcorrugating rollers adapted to form transverse corrugations in the metalsheet, marginal turning devices adapted to turn the corrugated marginsof the sheet on said strands to form reversely disposed alining webs,corrugated clenching rollers timed for engagement with the turnedalining webs and operative to press the same to final position inrespect to the corrugation of said sheet, a travel adjuster operative tosaid rollers and cutter permitting the corrugated sheet to buckle whileit is being intercepted by the cutting action.

19. In a sheet-metal working machine, the combination with rotaryslitting devices operative to cut in the metal sheet, opposite parallellongitudinal slits spaced by connecting strands of the metal sheet, ofcorrugating rollers arranged to form transverse corrugations in theslitted sheet, marginal turning channels operative to turn thecorrugated margins of the sheet on said strands, to form reverselydisposed alining webs, corrugated clenching rollers operative to presssaid turned alining webs to final position in respect to thecorrugations of said sheet, and a cutter operative with a timed actionto cut the corrugated sheet into plates of a predetermined length.

20. In a sheet-metal working machine, the combination with rotaryslitting devices operative to cut in the metal sheet, opposite parallellongitudinal slits spaced by connecting strands of the metal sheet, ofcorrugating rollers arranged to form transverse corrugations in theslitted sheet, marginal turning channels operative to turn the corrugated margins of the sheet on said strands, to form reversely disposedalining webs, corru ated clenching rollers operative to press ing acorrugated sheet, of a cutter for severing the sheet, a cutter-actuatingmechanism, a stop normally holding said actuating mechanism out ofaction, and a trip driven with a timed action from said sheet feedingmeans and operating to retract said stop and render the said cutteroperative.

22. The combination with means for feeding a corrugated sheet, of acutter for severing said sheet, a cutter-actuating mechanism, includinga one-revolution clutch, a stop normally holding said clutchinoperative, and a trip driven from said sheet-feeding means andoperative to retract said stop and render the said clutch operative forone revolution.

23. The combination with corrugated rollers controlling a feed movementof a corrugated sheet, of a cutter for severing the cor rugated sheet,cutter-actuating mechanism, including a one-revolution clutch, a stopnormally holding said clutch inoperative, an adjustable gear support,and one of a series of diflerent sized gears journaled on saidadjustable support, and a trip driven by said gear and operative toretract said stop and render said clutch operative for one revolution.

24. In a sheet-metal working machine, the combination with means forfeeding a metal sheet and for forming in the edge thereof longitudinalslits spaced by connecting strands, of a light containing inspection boxover which the sheet is fed on its way to said slitting devices.

25. In a sheet-metal working machine, the combination with means forfeeding a metal sheet and for forming in the edge thereof longitudinalslits spaced by connecting strands, of a light containing inspection boxover which the sheet is fed on its way to said slittin devices, and amarking device located between said inspection box and slitting devicesoperative to mark defective portions of the sheet.

In testimony whereof I afiix my signature in presence of two witnesses.

GEZA HORVATH.

Witnesses:

EDWARD C. GRANT. HELMER A. WALSTRU'M.

